结果表明：（1）供试土壤在相对水气压达72—75％时，开始明显呈现出毛管凝聚作用；

The results are shown as follows:1. When the relative vapor pressure reached to 72-75%, capillary moisture condensation began to appear in the tested soil.

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结果表明：（1）供试土壤在相对水气压达72—75％时，开始明显呈现出毛管凝聚作用；

The results are shown as follows:1. When the relative vapor pressure reached to 72-75%, capillary moisture condensation began to appear in the tested soil.

youdao